Question

найдите а) А = {-2, - 5 ,3,7,9} , B= {-5,3,7,9}
б) A = {a,b,m,n} B = { b,c,d,m,n,t}
в) A= N,B= Z

Answer 1

а)АUB={-2,-5,3,7,9}
AΠB={-5,3,7,9}
AB={-2}
BA={∅} б)АUB={a,b,c,d,m,n,t}
AΠB={b,m,n}
AB={a}
BA={c,t}